Juventus dropped points for the first time in Serie A this season after Atalanta came from two goals down to draw a thrilling game at the Stadio Atleti Azzurri d'Italia.
Goals from Federico Bernardeschi and Gonzalo Higuain put Juve ahead.
Mattia Caldara pulled one back for Atalanta before Bryan Cristante headed in the equaliser, BBC.
Juve's Paulo Dybala then had a penalty saved, as his team move to second in the table behind Napoli.